I cleaned all the dust out of my computer with a compressor
Did you remove the ATI Radeon HD 4830 and the Ram sticks and clean out their slots.
The paste on my CPU is a bit smudged and a couple years old, what should I do about that?
Clean off the existing thermal paste and apply a fresh amount, this is always the best approach
should you remove the HS and CPU fan as the paste can become contaminated with dust and you will
not get a perfect mating surface between the CPU and HS.
Is it rude to just ask questions about my computer here?
Not at all, we are all learning whilst helping others, thats one of the benefits of this forum.
I have one large fan that is on the High setting (It seems to run sorta slow)
Did you download and run Speedfan? If not do so and post a screenshot of the result.
In the Speedfan control panel try disabling the Autodetect facility and manually set all fans to 100%.
Another possibility is the gfx card, download and run (no install is necessary) gpu-z from here http://download.cnet...4-10788513.html
this will provide you with info on your video card.
Also check for any driver updates for the card but hold off installing them until you have done the above.